<template>
  <el-breadcrumb class="app-levelbar" separator="/">
    <el-breadcrumb-item v-for="(item,index)  in levelList" :key="item.path">
      <span v-if='item.redirect==="noredirect" || index==levelList.length-1' class="no-redirect">{{item.name}}</span>
      <router-link v-else :to="item.redirect||item.path">{{item.name}}</router-link>
    </el-breadcrumb-item>
  </el-breadcrumb>
</template>

<script>
export default {
  created () {
    this.getBreadcrumb()
  },
  data () {
    return {
      levelList: null
    }
  },
  methods: {
    getBreadcrumb () {
      let matched = this.$route.matched.filter(item => item.name)
      const first = matched[0]
      if (first && (first.name !== '首页' || first.path !== '')) {
        matched = [{ name: '首页', path: '/' }].concat(matched)
      }
      this.levelList = matched
    }
  },
  watch: {
    $route () {
      this.getBreadcrumb()
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
  .app-levelbar.el-breadcrumb {
    display: inline-block;
    .no-redirect {
      color: #97a8be;
      cursor: text;
    }
  }
  @media screen and (max-width: 720px) {
    .app-levelbar.el-breadcrumb {
      display: none;
    }
  }
</style>
